How often should injectors be replaced. I have a 4X4 '93 F150 W/302 EFI with bad gas mileage. I've put in K&N filter, new plugs, wires, rotor, cap, O2 sensor, and jacked with the timing. Still seems to "hesitate" occationally while driving with cruise control on (especially 30-40 mph). I've run three tanks with varying priced injector cleaners in it. Still get about 13mph! New injectors?

 

i don't think you need injectors dude

 

You're starting in the right direction with ensuring your motor is running properly... Now check the gearing on the rear end; watch your driving habits; check those tires to make sure they are properly inflated; automatic transmission? - make real sure that it is adjusted and operating efficiently.

I've got a '96 Eddie Bauer Bronco that has a cumlative average gas mileage of 15.9 mpg - I usually run about 15.5 around town and will hit the high 17's and low 18's on the road at 70 mph (on cruise control). I have the 351 Windsor which I believe gives me a better horsepower to weight ratio than you will be able to get with your 302.

At least we both have our Fords!!!